Door mechanism



2 SheeLcs-Sleet 1 C. R. VEGREN Dec. 25, 1934.

DOOR MECHANISM Filed March 17, y1933 Dec. 25, 1934. C, Rv VEGREN1,985,847

DOOR MECHANISM Filed March 17, 1953 2 Sheets-Sheet 2 Il L LL -f IIIIIlll lPatented ec. 25, 1,934

PATENT oFFi-CE Doon MECHAMSM l Conrad `R; Ve'gremChicago, Ill., assignerto Camel JCompany, Chicago, Ill., au corporationoi' Illinois Amiticatrm`March 17, Y1933, serial No. 661,254

`1o claims."

elimination of error inA application and accuracy of operation thereof.

\ A further object is to provide a mechanism for elevating andsupporting longitudinally movable doors capable-of imparting a closingmovement to said doors during the lowering movement thereof and anopening movement thereto during the elevation thereof.l Y A furtherobject is to provide mechanism for elevating and supportinglongitudinallymovablej doors in which the moment of the door tending toresist elevation thereof will be substantially constant throughout-theentire elevation of said doors.

tion of the invention proceeds', 5

tion t Figure 1 is a partial-elevation of acar door embodying themechanism of theinstant invention, the door being vshown in loweredposition;4

Figure 2 is a View similar to y Figure 1, showing the doorin'elevatec'lposition;

of the lower left hand corner of thedoor;

Figure 4 isa vertical sectiontaken on line' s s with'. The retainer'isprovided with a top wall 4--4 of Figure 3; f

5-5 of Figure`3;

Figure 6 is a horizontal section similar to Figure 5 through the lowerright hand cornerjof the door; 1

Figure 7 is an enlarged fragmentary elevationV of the lower portion ofthe operating lever;

Figure 8 is a vertical section taken on line 8 8 Figure 9 is a sideelevation of the roller re-` s i i rality'of brackets 34 and 35 securedto said door tainer; and t A s "Figure 10 is a section taken on line10-10` of Figure 9. i c i Referring to the `drawings in which apreferred embodiment of theinventionis illustrated the `numeral 10designates a portion of the side Wall Other objects will becomeclear `asthe descrip- In the drawings forming part ofthis specifica-1 t v t ure 4of the "drawings A roller retainer 22 is Figure 3 is an enlargedVfragmentary elevation Figure 5 is a horizontal `section taken on line fis preferably arcuate and provided with a recess 40* of a railwayhousecar that embodies the door 11- on which the invention is shown.`The s track 12 extending outwardly beyond the side wall 10 is carriedby the car by means of a plurality of track brackets 13 to which thetrack 12 may be secured as by rivets 14. "5'

The door 11,` as clearly shown in Figures 1, l2 and 3 of the drawings,which is adapted to be supported normally in `frictional engagement withthe track12, is preferably of metallic construction and comprises ametallic panel-1`5 provided with a 10 plurality of spacedhorizontalcorrugations 16, which, with the exception ofthe lowermostcorrugation, merge at their endsinto vertical corrugations 17I and 18formed inv saidpanel adjacent the'vertical margins of thedoor. Themargins of 15 the door are-usually reinforced by means of structuralmembers secured thereto and, as clearly illustrated in Figure 4 of thedrawings, the lower margin of the door ispr'ovided with anangle member19 which serves'to reinforce the lower 20 margin of the `door and tohavefrictional engagement withfthetrack in the normal or lowered position ofthe door. Y

A roller 20 is disposed preferablyadjacent each of the' lower corners ofthe door in engagement 25VV withthe track 12 and to permit suchengagement between the roller and the track vthe angle bar ,l9`Y iscoped as indicated at 21, illustrated in Figprovided for each of saidrollers which are re- 3o tained in said retainers bymeans of the pins oraxles 23 extending through the roller. Roller bearings 24 are preferablyprovided for said rollers. 7 Eachfof the retainers 22 comprisespreferably side walls 25 and 26 provided with the 35 aligned openings 27and 28 into which the pin` 23 is adapted to extend in tight engagementthere- 29 which, as shown in Figure'9`of `the drawings 30. A4pluralityof lugs Bland 32 extend from the side wall26 of the rollerretainer adjacent the opening 28 formed therein. A projection 33 extendsfrom said sidewall 26 adjacent the arcuate wall 29 of the retainer.

4Each of the retainers with its corresponding roller is adapted to bemaintained in proper position relative to4 the door by means of a plu-`apparent that the'moment of the ldoor `about the center ofswing Vof thelever tending to resist elevationof the :door as a-resultof the weightthereof, will be constant for all elevated lpositions of the door.VAfter the door has been elevated the weight `thereof wilLbe carried by`the `rollers and said doormay then readily be movedlongitudinally ofthe-car as desired. Y

It is apparent that numerous changes and modifications in the details`of the invention will be clear to those skilled in the art. It isintended, therefore, that all such changes and modifications becomprehended within this invention, which is to be limited only by thescope of the claims appended hereto.

I claim:

1. In a railway house car, the combination with a longitudinally movabledoor and a track for frictionally supporting said door, of bracketssecured to said door adjacent the lower corners thereof, said bracketshaving portions providing track means and arcuate slots, rollerretainers.

disposed in said brackets having projections, rollers carried by saidretainers in engagement with f said door track, said retainers havingarcuate portions adapted for rolling engagement on said track means,means for effecting rolling engagement between said retainers and saidtrack means to elevate said door, said projections extending into saidslots to guide said retainers in a substantially vertical plane.

2. In a railway house car, the combination with a longitudinally movabledoor and a track for frictionally supporting said door, of bracketssecured to said door adjacent the lower corners thereof, said bracketshaving portions providing track means, roller retainers independent ofsaid door disposed in said brackets in substantially parallelrelationship to said door, rollers carried by said retainers inengagement with said door track, said retainers having arcuate portionsadapted for rolling engagement o-n said track means, means for effectingrolling engagement between said retainers and said track means toelevate said door, parts of the arcuate portions of said retainers beingwidened to lie in proximate relationship to said door and said bracketsto maintain the parallel relationship between said retainers and saiddoor.

3. In a railway house car, the combination with a longitudinally movabledoor and a track for frictionally supporting said door, of bracketssecured to said door adjacent the lower corners thereof, said bracketshaving portions providing track means, lugs depending from said trackmeans, roller retainers disposed in said brackets, rollers carried bysaid retainers in engagement with said door track, said retainers havingarcuate portions adapted for rolling engagement on said track meansprovidedwith recesses for receiving said lugs when said door isfrictionally supported on said track and means for effecting rollingengagement between said retainers and said track means to elevatesaiddoor. 4. In a railway house car, the combination wit alongitudinally movable door and a track for frictionally supporting saiddoor, of brackets secured to said door adjacent the lower cornersthereof, said brackets having portions providing track means, rollerretainers disposed in said brackets, rollers carried by said retainersin engagement with said door track, said retainers having arcuateportions adapted for rolling engagement on said track means, means foreffecting rolling engagement between said retainers 5. `In a railwayhouse car, the combinationwith a `longitudinally.movable door and atrackfor frictionally isupportingxsaid door, of brackets 'securedto saiddooradjacent the lower corners thereof, said brackets having portionsproviding track means, roller retainers disposed in said brackets,rollers carried by said retainers in engagement with said door track,said retainers having arcuate portions adapted for rolling engagement onsaid track means, means for effecting rolling engagement between saidretainers and said track means to elevate said door, said meanscomprising a lever secured to one of said retainers and capable ofrelative longitudinal movement with respect to said door and saidbracket.

6. In a railway house car, the combination with a longitudinally movabledoor and a track for frictionally supporting said door, of bracketssecured to said door adjacent the lower corners thereof, said bracketshaving horizontally disposed flanges providing track means, lugsdepending from said track means, roller retainers disposed in saidbrackets, rollers carried by said retainers in engagement with said doortrack, said retainers having arcuate portions adapted for rollingengagement on said track means provided with recesses adapted forintermeshing relationship with said depending lugs and means foreffecting rolling engagement between said retainers and said track meansto elevate said door.

7. In a railway house car, them combination, with a longitudinallymovable door and a track for frictionally supporting said door, ofbrackets secured to said door adjacent the lower corners thereof, saidbrackets having horizontally disposed flanges providing track means,roller retainers associated with said brackets, rollers carried by saidretainers in engagement with said door track, said retainers havingarcuate portions adapted for rolling engagement with said track meansfor elevating said door and means including an operatinglever foractuating said retainers to effect rolling engagement between thearcuate portions of said retainers and said track means to elevate saiddoor.

8. In a railway house car, the combination with a track and a doormovable longitudinally upon said track, said door being frictionallysupported upon said track in lowered position, of a member secured tosaid door adjacent each vertical edge thereof, a roller retainerassociated for rolling engagement with each of said members, ,a rollermounted in each retainer in engagement with said track and means forimparting movement of rotation to said retainers about said rollers asfulcrums to effect rolling engagement between said retainers and saidmembers whereby to elevate said door above said track and support theweight thereof upon said rollers.

9. In a railway house car, the combination with a track and a doormovable longitudinally upon said track, said door being frictionallysupported upon said track in lowered position, of a member secured tosaid door adjacent each vertical edge thereof, and a roller retainerhaving an arcuate portion associated for rolling engagement with each ofsaid members, a roller mounted in each retainer in engagement withV saidtrack and means for imparting movement of rotation to said retainersabout said rollers as fulcrums to effect rolling engagement between saidarcuate portions and said. members whereby to elevate Said door` abovesaid traok aridA support the Weight thereof upon said rollers 5 10. In arailway house-car, the combination with track and a door movablelongitudinally upon said track, said door being frctionally sup-v portedupon' said track in lowered position, of brackets Ysecured yto saiddoorl adjacent the ver- 15o tical edges thereof, roller retainers havingarcuate porti-ons associated for rolling engagement with said. brackets,rollers mounted in said retainers in engagement with said track meansfor effecting rolling engagement between the' arcuate portions of saidretainers and. said brackets to elevate said door above said, track formovement upon said rollers, said. retainers coasting with said bracketsto impart opening movement to said door during the elevation thereof.

CONRAD R. VEGREN.

